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单词
Owl Nebula
释义
Owl Nebula
Encyclopedia
理学
行星状星云
释
Owl Nebula
夜枭星云
位于大熊星座的一个比较复杂的行星状星云。星表中的编号为M97和NGC3587。距离地球2030光年(621秒差距),视星等为9.9,年龄约8千年。又称猫头鹰星云。
Astronomy
Owl Nebula
夜枭星云
随便看
optical variable
optical vibration isolation platform
optical visual binary
optical vortex
optical wave
optical wave gauge
optical waveguide
optical waveguide active device
optical waveguide fiber
optical waveguide passive device
optical wavelength division multiplexing transmission system
optical wavelength division switching,OWDS
optical wavelength meter
optical wedge
optical whitener for fiber
optical window
optical wind theodolite
optical yield
optic ataxia
opticator
optic atrophy
optic axis
optic axis of crystal
optic centre
optic chiasma
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更新时间:2026/8/13 16:42:32